>> i'll be the first to admit that the overall results and u.s. k through 12 education have not improved dramatically yet, but i do think there are things being done about helping teachers improve, better kruk limb, and the use of technology that will take that space and allow it and do a far better job. that's an optimistic statement, but we're seeing in boths as we apply these new approaches, we're seeing a very big impact. >> you're now focusing your attention on what people tend to think of as the crown jewel of the american education system. everybody thinks of k-12 being at the bottom end but college education, we're supposed to be the world leaders at. but you say not so fast. >> well, certainly in terms of the top 100 institutions in the world, the u.s. dominates that list. in the rankings, you get anywhere from half to 80% of the top 100 institutions here. and, you know, they have been so small because they have philanthropy. that's working great. they turn out great research. that's not the engine of equality. it's more the two-year comm